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NIST 800-53 High-Impact Baseline for Red Hat Enterprise Linux CoreOS

Rules and Groups employed by this XCCDF Profile

  • Network Time Protocol

    The Network Time Protocol is used to manage the system clock over a network. Computer clocks are not very accurate, so time will drift unpredictabl...
    Group
  • Enable the NTP Daemon

    As a user with administrator privileges, log into a node in the relevant pool: <pre> $ oc debug node/$NODE_NAME </pre> At the <pre>sh-4.4#</pre> p...
    Rule Medium Severity
  • Disable chrony daemon from acting as server

    The <code>port</code> option in <code>/etc/chrony.conf</code> can be set to <code>0</code> to make chrony daemon to never open any listening port f...
    Rule Low Severity
  • Disable network management of chrony daemon

    The <code>cmdport</code> option in <code>/etc/chrony.conf</code> can be set to <code>0</code> to stop chrony daemon from listening on the UDP port ...
    Rule Low Severity
  • Configure Time Service Maxpoll Interval

    The <code>maxpoll</code> should be configured to <xccdf-1.2:sub idref="xccdf_org.ssgproject.content_value_var_time_service_set_maxpoll" use="legacy...
    Rule Medium Severity
  • Specify Additional Remote NTP Servers

    Depending on specific functional requirements of a concrete production environment, the Red Hat Enterprise Linux CoreOS 4 system can be configured ...
    Rule Medium Severity
  • Specify a Remote NTP Server

    Depending on specific functional requirements of a concrete production environment, the Red Hat Enterprise Linux CoreOS 4 system can be configured ...
    Rule Medium Severity
  • SSH Server

    The SSH protocol is recommended for remote login and remote file transfer. SSH provides confidentiality and integrity for data exchanged between tw...
    Group
  • Disable SSH Server If Possible

    Instead of using ssh to remotely log in to a cluster node, it is recommended to use <code>oc debug</code> The <code>sshd</code> service can be di...
    Rule High Severity
  • Verify Group Who Owns SSH Server config file

    To properly set the group owner of /etc/ssh/sshd_config, run the command:
    $ sudo chgrp root /etc/ssh/sshd_config
    Rule Medium Severity

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